I like the way that the messages are setup on my Blackberry, but I heard there was a way to just show the messages from one contact on a Storm by holding, not clicking, on a message for a second or two from a contact and it would bring up all the messages from this contact.
I don't think this is what you are looking for but it might help you a little. Hope you enjoy the rest the Storm has to offer! I can't wait to get mine! Only a week or two yet!! :D